Speaker



FIG. 1 is a top plan view of a speaker showing my new design;

FIG. 2 is a side elevational view thereof, the remaining sides being identical;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a top plan view of a second embodiment of the speaker illustrated in FIG. 1;

FIG. 5 is a side elevational view of the speaker disclosed in FIG. 4, the remaining sides being identical; and

FIG. 6 is a bottom plan view of the speaker disclosed in FIG. 4. 

The ornamental design for a speaker, as shown and described. 